Hough transform‐based approach for estimating 3D rotation angles of vertebrae from biplanar radiographs using GPU‐acceleration
Hough transform‐based approach for estimating 3D rotation angles of vertebrae from biplanar radiographs using GPU‐acceleration
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基于霍夫变换的方法，使用 GPU 加速从双平面 X 线照片估计椎骨 3D 旋转角度
DOI：
10.1002/ima.22061
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发表时间：
2013
影响因子：
3.3
通讯作者：
Hongjian Li
中科院分区：
文献类型：
--
作者：
Junhua Zhang;L. Lv;Xinling Shi;Fei Guo;Yufeng Zhang;Hongjian Li
对于脊柱侧凸的评估，开发了一个系统来估计从双平面x线片椎体的三维（3D）旋转角度。该方法基于广义霍夫变换（GHT）技术，将标准三维原语的投影轮廓与双平面x线片中检测到的椎体边缘进行匹配。针对不精确轮廓匹配，提出了一种变形容限匹配策略。该系统是在图形处理单元（GPU）上实现的。17个干椎体标本用于评估准确性。三名操作员对15名患者的181个椎骨x线片进行了精度测试。使用GPU计算，对一个椎体的平均估计时间为10 s。结果表明，三维估计误差小于2.5°，平均值为1.6°。操作者内部的变异在1.6°以内，操作者之间的变异在2.2°以内。这些有希望的结果表明，所提出的系统可以帮助骨科医生从二维x线片上测量三维椎体旋转角度，以更好地评估脊柱侧凸。©2013 Wiley期刊公司中国光学精密工程学报，2016,33 (2):444 - 444
For scoliosis assessment, a system was developed to estimate the three‐dimensional (3D) rotation angles of vertebrae from biplanar radiographs. The proposed approach was based on the generalized Hough transform (GHT) technique to match the projected contours of the standard 3D primitive with vertebral edges detected in biplanar radiographs. A deformation tolerant matching strategy was proposed to extend the GHT for an inexact contour matching. The system was implemented on a graphics processing unit (GPU). Seventeen dry vertebral specimens were used to evaluate accuracy. Precision was tested by three operators on 181 vertebrae from radiographs of 15 patients. With GPU computing, the average estimation time was 10 s for a vertebra. Results showed that the 3D estimation error was less than 2.5° with the mean value of 1.6°. The intraoperator variability was within 1.6° and the interoperator variability was within 2.2°. These promising results indicate that the proposed system can help orthopedic surgeons measure the 3D vertebral rotation angles from two‐dimensional radiographs for better assessment of scoliosis. © 2013 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 23, 272–279, 2013
影响因子：
120.7
作者：
Yawn, BP;Yawn, RA;Jacobsen, SJ
通讯作者：
Jacobsen, SJ